EP2320593A1 - Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant - Google Patents

Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant Download PDF

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Publication number
EP2320593A1
EP2320593A1 EP09306070A EP09306070A EP2320593A1 EP 2320593 A1 EP2320593 A1 EP 2320593A1 EP 09306070 A EP09306070 A EP 09306070A EP 09306070 A EP09306070 A EP 09306070A EP 2320593 A1 EP2320593 A1 EP 2320593A1
Authority
EP
European Patent Office
Prior art keywords
samples
calculation
sinr
average
variance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09306070A
Other languages
German (de)
English (en)
Inventor
Stefania Sesia
Andrea Ancora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OCT Circuit Technologies International Ltd
Original Assignee
ST Ericsson SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ST Ericsson SA filed Critical ST Ericsson SA
Priority to EP09306070A priority Critical patent/EP2320593A1/fr
Priority to CN201080050674.2A priority patent/CN102668436B/zh
Priority to US13/505,267 priority patent/US20120310573A1/en
Priority to PCT/EP2010/066872 priority patent/WO2011054918A2/fr
Publication of EP2320593A1 publication Critical patent/EP2320593A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication

Definitions

  • the said selection step is performed iteratively until the difference between the current average value of samples calculated on a current selected set of samples and the preceding average value of samples calculated on the preceding selected set of samples is smaller than a threshold.
  • the problem of this method is the overestimation of the SINR particularly in low SINR region.
  • the maximum likelihood method is biased because the maximum likelihood-based identification of one sample chip can be false.
  • a modified maximum likelihood method is proposed based only on a selected amount of samples, and more precisely the samples that are the most reliable.
  • B sel is obtained iteratively after the derotation of 160xNcodes symbols (step 201). More precisely, B sel , n denotes the current group of samples selected at iteration n.
  • a sel represents also an attenuation coefficient of the channel.
  • a step 203 of variance calculation is performed.
  • the risk of a false maximum likelihood identification of one sample is reduced because the curve fitting proposes to identify a probability density function of a group of samples.
  • a coarse estimation of the mean (average) of the received samples on the slot ts is performed (step 401).

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
EP09306070A 2009-11-09 2009-11-09 Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant Withdrawn EP2320593A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09306070A EP2320593A1 (fr) 2009-11-09 2009-11-09 Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant
CN201080050674.2A CN102668436B (zh) 2009-11-09 2010-11-05 根据采样点的选择估计信干噪比的方法、装置及设备
US13/505,267 US20120310573A1 (en) 2009-11-09 2010-11-05 Method to estimate a signal to interference plus noise ratio based on selection of the samples and corresponding processing system
PCT/EP2010/066872 WO2011054918A2 (fr) 2009-11-09 2010-11-05 Procédé d'estimation de rapport signal/interférences plus bruit, sur la base d'une sélection d'échantillons, et système de traitement correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09306070A EP2320593A1 (fr) 2009-11-09 2009-11-09 Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant

Publications (1)

Publication Number Publication Date
EP2320593A1 true EP2320593A1 (fr) 2011-05-11

Family

ID=41820674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09306070A Withdrawn EP2320593A1 (fr) 2009-11-09 2009-11-09 Procédé pour estimer un signal d'interférence et un rapport de bruit d'après une sélection d'échantillons et système de traitement correspondant

Country Status (4)

Country Link
US (1) US20120310573A1 (fr)
EP (1) EP2320593A1 (fr)
CN (1) CN102668436B (fr)
WO (1) WO2011054918A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095630A (zh) * 2011-11-01 2013-05-08 联芯科技有限公司 无线通信系统中噪声估计的方法和装置
WO2019232073A1 (fr) * 2018-05-29 2019-12-05 Hughes Network Systems, Llc Système et procédé d'extraction d'une qualité de liaison satellite-sol à l'aide d'un signal de télémesure satellitaire et d'un récepteur à faible complexité
WO2021115687A1 (fr) * 2019-12-12 2021-06-17 Nokia Technologies Oy Atténuation d'erreur de non visibilité directe (nlos) de positionnement basé sur un équipement utilisateur (ue)
CN114610786A (zh) * 2022-02-26 2022-06-10 国网湖北省电力有限公司电力科学研究院 一种基于邻近平均数据的含扰数据阶跃时间辨识方法

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CN107534530B (zh) * 2015-09-25 2020-07-17 诸暨市尚诺五金经营部 信干噪比的计算方法、装置和接收机
US10863433B2 (en) * 2018-02-13 2020-12-08 Mediatek Inc. Power saving on UE reports
CN110087310B (zh) * 2019-05-14 2021-01-26 南京邮电大学 一种干扰环境下无线定位网络资源分配方法
CN115988556B (zh) * 2022-12-27 2026-03-27 上海理工大学 无线传感器网络链路质量回归估计方法

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US5991273A (en) * 1997-05-01 1999-11-23 Nortel Networks Corporation Determining SINR in a communications system
US7573964B2 (en) * 2004-12-16 2009-08-11 Motorola, Inc. Channel estimator with extended channel bandwidth
US7421045B2 (en) * 2005-03-18 2008-09-02 Interdigital Technology Corporation Method and apparatus for computing SIR of time varying signals in a wireless communication system
CN101188407B (zh) * 2007-11-28 2010-06-09 北京中星微电子有限公司 一种数字式自然脉宽调制方法与装置

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
GAGLIARDI R ET AL.: "PCM Data Reliability Monitoring Through Estimation of Signal-to-Noise Ratio", IEEE TRANSACTIONS ON COMMUNICATION TECHNOLOGY, IEEE, USA, vol. 12, no. 3, June 1968 (1968-06-01), pages 479 - 486
GAGLIARDI R ET AL: "PCM Data Reliability Monitoring Through Estimation of Signal-to-Noise Ratio", IEEE TRANSACTIONS ON COMMUNICATION TECHNOLOGY, IEEE, USA, vol. 12, no. 3, 1 June 1968 (1968-06-01), pages 479 - 486, XP011218147, ISSN: 0018-9332 *
GANHUA YE ET AL: "Revised SNR Estimator in DSSS Receiver Based on Curve Fitting", IMAGE AND SIGNAL PROCESSING, 2009. CISP '09. 2ND INTERNATIONAL CONGRESS ON, IEEE, PISCATAWAY, NJ, USA, 17 October 2009 (2009-10-17), pages 1 - 3, XP031555913, ISBN: 978-1-4244-4129-7 *
YUNFEI CHEN ET AL.: "Maximum likelihood snr estimators for digital receivers", COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, 2005, PACRIM. 2005 IEEE PACIFIC RIM CONFERENCE ON VICTORIA, BC, 24 August 2005 (2005-08-24), pages 637 - 640
YUNFEI CHEN ET AL: "Maximum likelihood snr estimators for digital receivers", COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, 2005. PACRIM. 2005 IE EE PACIFIC RIM CONFERENCE ON VICTORIA, BC, CANADA 24-26 AUG., 2005, PISCATAWAY, NJ, USA,IEEE, 24 August 2005 (2005-08-24), pages 637 - 640, XP010841527, ISBN: 978-0-7803-9195-6 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095630A (zh) * 2011-11-01 2013-05-08 联芯科技有限公司 无线通信系统中噪声估计的方法和装置
CN103095630B (zh) * 2011-11-01 2016-03-09 联芯科技有限公司 无线通信系统中噪声估计的方法和装置
WO2019232073A1 (fr) * 2018-05-29 2019-12-05 Hughes Network Systems, Llc Système et procédé d'extraction d'une qualité de liaison satellite-sol à l'aide d'un signal de télémesure satellitaire et d'un récepteur à faible complexité
US10594535B2 (en) 2018-05-29 2020-03-17 Hughes Network Systems, LLC. System and method for extracting satellite to ground link quality using satellite telemetry signal and low complexity receiver
EP3804170A1 (fr) * 2018-05-29 2021-04-14 Hughes Network Systems, LLC Système et procédé d'extraction d'une qualité de liaison satellite-sol à l'aide d'un signal de télémesure satellitaire et d'un récepteur à faible complexité
WO2021115687A1 (fr) * 2019-12-12 2021-06-17 Nokia Technologies Oy Atténuation d'erreur de non visibilité directe (nlos) de positionnement basé sur un équipement utilisateur (ue)
CN114868437A (zh) * 2019-12-12 2022-08-05 诺基亚技术有限公司 基于用户设备(ue)的定位非视距(nlos)误差缓解
US12245184B2 (en) 2019-12-12 2025-03-04 Nokia Technologies Oy User equipment (UE)-based positioning non-line of sight (NLOS) error mitigation
CN114610786A (zh) * 2022-02-26 2022-06-10 国网湖北省电力有限公司电力科学研究院 一种基于邻近平均数据的含扰数据阶跃时间辨识方法

Also Published As

Publication number Publication date
CN102668436A (zh) 2012-09-12
WO2011054918A2 (fr) 2011-05-12
US20120310573A1 (en) 2012-12-06
CN102668436B (zh) 2015-01-07
WO2011054918A3 (fr) 2011-07-28

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